Delete a folder from the vault. By default only deletes empty folders. Set recursive=true to delete the folder and all its contents.
AI agents call delete_folder to permanently remove resources in Obsidian Vault MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes data (folders and potentially all nested notes/files when recursive mode is enabled). Deletion cannot be undone, making it a destructive operation rather than merely a write operation. The recursive capability amplifies the blast radius by allowing single-command deletion of entire directory trees containing multiple notes.
From the tool's definition Tool name is 'delete_folder' with description stating it 'Delete[s] a folder from the vault' and can recursively delete 'the folder and all its contents' when recursive=true is set.
Attacks that exploit this kind of access
Delete a folder from the vault. By default only deletes empty folders. Set recursive=true to delete the folder and all its contents. It is categorised as a Destructive tool in the Obsidian Vault MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Obsidian Vault MCP Server MCP server in PolicyLayer and add a rule for delete_folder: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Obsidian Vault MCP Server. Nothing to install.
delete_folder is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_folder rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for delete_folder. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
delete_folder is provided by the Obsidian Vault MCP Server MCP server (jonhollander/obsidian-mcp-cloudflare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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